What point are you making here? That Apple should be able to leverage their market position to crush their competition for a particular device just because it doesn't affect you in particular? You don't care for smart watches so the smart watch market should be exempt from regulation?
Third-party controllers have been widely available for every popular video game console including the GameCube. Nothing was stopping anyone - Microsoft included - from creating an Xbox controller which would also work on the GameCube. Nintendo certainly didn't stop anyone.
This example completely misrepresents the issue. Nobody is asking Apple to add support for Pebble watches to their devices. They're asking Apple to stop preventing Pebble (and other smart watch manufacturers) from being able to support Apple devices.
Ok, then Microsoft put a famously large amount of effort into stopping people from installing other software on each version of Xbox. And Nintendo at least made it difficult to create unlicensed GameCube games.
Game consoles are not general purpose computing devices. People do not buy Xboxes with the expectation of running Photoshop. But people buy smartphones with the expectation of being able to use smartphone peripherals.
